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CAUTION:
Do not close SW2-1 and SW2-2 at the same time. Doing so will significantly
shorten battery life.
SW2-1
SW2-2
Closed
Open
Default
Open
Closed
SW2-3 (VGA Routing Control)
This switch controls the routing of VGA signals to either the front or rear of the board. The
default switch configuration routes VGA signals to the faceplate video connector.
SW2-3
Open
Default
Closed
SW3-1 (BIOS Recovery Module/Flash Select)
Use this switch to boot from the BIOS Recovery Socket (U38). When SW3-1 is open, the BIOS
boots from the on-board flash memory. When SW3-1 is closed, the BIOS boots from the BIOS
Recovery Socket. Factory default is open. See the
for details on how to flash the BIOS.
SW3-1
Open
Default
Closed
SW3-2 (Flash Write-Protect)
Closing this switch write-protects flash memory. Open SW3-2 when installing an operating
system image (such as VxWorks) into flash or when using the
from a corrupted BIOS. The status of this switch can be read back at the
register
(Port E3h, bit 7). Factory default is open.
SW3-2
Open
Default
Closed
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CMOS Configuration RAM
Normal operation - battery backed.
Clear CMOS (return to default after clearing).
Function
VGA routed to the J6 video connector on the faceplate.
VGA routed to the J5 Rear Panel I/O connector.
Function
Boots from on-board flash memory.
Boots from the BIOS recovery socket.
Function
Flash disk/BIOS read/write.
Flash disk/BIOS read only.
"BIOS Recovery
Module" topic in Chapter 8
FLASH.EXE
Switch Monitor
3. Configuration
utility to recover
33
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